Gautham R Shenoy | 74db920 | 2010-04-29 17:44:43 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Virtio 9p |
| 3 | * |
| 4 | * Copyright IBM, Corp. 2010 |
| 5 | * |
| 6 | * Authors: |
| 7 | * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> |
| 8 | * |
| 9 | * This work is licensed under the terms of the GNU GPL, version 2. See |
| 10 | * the COPYING file in the top-level directory. |
| 11 | * |
| 12 | */ |
| 13 | #ifndef _FILEOP_H |
| 14 | #define _FILEOP_H |
| 15 | #include <sys/types.h> |
| 16 | #include <dirent.h> |
| 17 | #include <sys/time.h> |
| 18 | #include <utime.h> |
| 19 | #include <sys/stat.h> |
| 20 | #include <sys/uio.h> |
Venkateswararao Jujjuri (JV) | 758e8e3 | 2010-06-14 13:34:41 -0700 | [diff] [blame] | 21 | #include <sys/vfs.h> |
Aneesh Kumar K.V | 0174fe7 | 2011-08-02 11:35:54 +0530 | [diff] [blame] | 22 | |
Venkateswararao Jujjuri (JV) | 758e8e3 | 2010-06-14 13:34:41 -0700 | [diff] [blame] | 23 | #define SM_LOCAL_MODE_BITS 0600 |
| 24 | #define SM_LOCAL_DIR_MODE_BITS 0700 |
| 25 | |
Venkateswararao Jujjuri (JV) | 758e8e3 | 2010-06-14 13:34:41 -0700 | [diff] [blame] | 26 | typedef struct FsCred |
| 27 | { |
| 28 | uid_t fc_uid; |
| 29 | gid_t fc_gid; |
| 30 | mode_t fc_mode; |
| 31 | dev_t fc_rdev; |
| 32 | } FsCred; |
Gautham R Shenoy | 74db920 | 2010-04-29 17:44:43 +0530 | [diff] [blame] | 33 | |
Aneesh Kumar K.V | fc22118 | 2010-10-18 15:28:16 +0530 | [diff] [blame] | 34 | struct xattr_operations; |
Harsh Prateek Bora | e06a765 | 2011-10-12 19:11:25 +0530 | [diff] [blame] | 35 | struct FsContext; |
| 36 | struct V9fsPath; |
| 37 | |
| 38 | typedef struct extended_ops { |
| 39 | int (*get_st_gen)(struct FsContext *, struct V9fsPath *, |
| 40 | mode_t, uint64_t *); |
| 41 | } extended_ops; |
Aneesh Kumar K.V | fc22118 | 2010-10-18 15:28:16 +0530 | [diff] [blame] | 42 | |
Aneesh Kumar K.V | d3ab98e | 2011-10-12 19:11:23 +0530 | [diff] [blame] | 43 | /* export flags */ |
Aneesh Kumar K.V | c98f1d4 | 2011-10-12 20:59:18 +0530 | [diff] [blame] | 44 | #define V9FS_IMMEDIATE_WRITEOUT 0x00000001 |
| 45 | #define V9FS_PATHNAME_FSCONTEXT 0x00000002 |
Aneesh Kumar K.V | b97400c | 2011-10-13 13:21:00 +0530 | [diff] [blame] | 46 | /* |
| 47 | * uid/gid set on fileserver files |
| 48 | */ |
| 49 | #define V9FS_SM_PASSTHROUGH 0x00000004 |
| 50 | /* |
| 51 | * uid/gid part of xattr |
| 52 | */ |
| 53 | #define V9FS_SM_MAPPED 0x00000008 |
| 54 | /* |
| 55 | * Server will try to set uid/gid. |
| 56 | * On failure ignore the error. |
| 57 | */ |
| 58 | #define V9FS_SM_NONE 0x00000010 |
Aneesh Kumar K.V | 2c30dd7 | 2012-01-19 12:21:11 +0530 | [diff] [blame] | 59 | /* |
| 60 | * uid/gid part of .virtfs_meatadata namespace |
| 61 | */ |
| 62 | #define V9FS_SM_MAPPED_FILE 0x00000020 |
| 63 | #define V9FS_RDONLY 0x00000040 |
| 64 | #define V9FS_PROXY_SOCK_FD 0x00000080 |
| 65 | #define V9FS_PROXY_SOCK_NAME 0x00000100 |
Aneesh Kumar K.V | b97400c | 2011-10-13 13:21:00 +0530 | [diff] [blame] | 66 | |
Aneesh Kumar K.V | 2c30dd7 | 2012-01-19 12:21:11 +0530 | [diff] [blame] | 67 | #define V9FS_SEC_MASK 0x0000003C |
Aneesh Kumar K.V | d3ab98e | 2011-10-12 19:11:23 +0530 | [diff] [blame] | 68 | |
M. Mohan Kumar | 2c74c2c | 2011-10-25 12:10:39 +0530 | [diff] [blame] | 69 | |
Aneesh Kumar K.V | 99519f0 | 2011-12-14 13:48:59 +0530 | [diff] [blame] | 70 | typedef struct FileOperations FileOperations; |
| 71 | /* |
| 72 | * Structure to store the various fsdev's passed through command line. |
| 73 | */ |
| 74 | typedef struct FsDriverEntry { |
| 75 | char *fsdev_id; |
| 76 | char *path; |
| 77 | int export_flags; |
| 78 | FileOperations *ops; |
| 79 | } FsDriverEntry; |
M. Mohan Kumar | 2c74c2c | 2011-10-25 12:10:39 +0530 | [diff] [blame] | 80 | |
Gautham R Shenoy | 74db920 | 2010-04-29 17:44:43 +0530 | [diff] [blame] | 81 | typedef struct FsContext |
| 82 | { |
Gautham R Shenoy | 74db920 | 2010-04-29 17:44:43 +0530 | [diff] [blame] | 83 | uid_t uid; |
Aneesh Kumar K.V | b97400c | 2011-10-13 13:21:00 +0530 | [diff] [blame] | 84 | char *fs_root; |
Aneesh Kumar K.V | d3ab98e | 2011-10-12 19:11:23 +0530 | [diff] [blame] | 85 | int export_flags; |
Aneesh Kumar K.V | fc22118 | 2010-10-18 15:28:16 +0530 | [diff] [blame] | 86 | struct xattr_operations **xops; |
Harsh Prateek Bora | e06a765 | 2011-10-12 19:11:25 +0530 | [diff] [blame] | 87 | struct extended_ops exops; |
Aneesh Kumar K.V | 532decb | 2011-08-02 11:35:54 +0530 | [diff] [blame] | 88 | /* fs driver specific data */ |
| 89 | void *private; |
Gautham R Shenoy | 74db920 | 2010-04-29 17:44:43 +0530 | [diff] [blame] | 90 | } FsContext; |
| 91 | |
Aneesh Kumar K.V | 2289be1 | 2011-09-09 15:14:18 +0530 | [diff] [blame] | 92 | typedef struct V9fsPath { |
Aneesh Kumar K.V | 2f008a8 | 2011-12-21 12:37:23 +0530 | [diff] [blame] | 93 | uint16_t size; |
Aneesh Kumar K.V | 2289be1 | 2011-09-09 15:14:18 +0530 | [diff] [blame] | 94 | char *data; |
| 95 | } V9fsPath; |
| 96 | |
Aneesh Kumar K.V | cc720dd | 2011-10-25 12:10:40 +0530 | [diff] [blame] | 97 | typedef union V9fsFidOpenState V9fsFidOpenState; |
| 98 | |
Blue Swirl | 64b85a8 | 2011-01-23 16:21:20 +0000 | [diff] [blame] | 99 | void cred_init(FsCred *); |
Venkateswararao Jujjuri (JV) | 758e8e3 | 2010-06-14 13:34:41 -0700 | [diff] [blame] | 100 | |
Aneesh Kumar K.V | 99519f0 | 2011-12-14 13:48:59 +0530 | [diff] [blame] | 101 | struct FileOperations |
Gautham R Shenoy | 74db920 | 2010-04-29 17:44:43 +0530 | [diff] [blame] | 102 | { |
Aneesh Kumar K.V | 99519f0 | 2011-12-14 13:48:59 +0530 | [diff] [blame] | 103 | int (*parse_opts)(QemuOpts *, struct FsDriverEntry *); |
Aneesh Kumar K.V | 0174fe7 | 2011-08-02 11:35:54 +0530 | [diff] [blame] | 104 | int (*init)(struct FsContext *); |
Aneesh Kumar K.V | 2289be1 | 2011-09-09 15:14:18 +0530 | [diff] [blame] | 105 | int (*lstat)(FsContext *, V9fsPath *, struct stat *); |
| 106 | ssize_t (*readlink)(FsContext *, V9fsPath *, char *, size_t); |
| 107 | int (*chmod)(FsContext *, V9fsPath *, FsCred *); |
| 108 | int (*chown)(FsContext *, V9fsPath *, FsCred *); |
| 109 | int (*mknod)(FsContext *, V9fsPath *, const char *, FsCred *); |
| 110 | int (*utimensat)(FsContext *, V9fsPath *, const struct timespec *); |
Anthony Liguori | 5bae190 | 2010-04-29 17:45:01 +0530 | [diff] [blame] | 111 | int (*remove)(FsContext *, const char *); |
Aneesh Kumar K.V | 2289be1 | 2011-09-09 15:14:18 +0530 | [diff] [blame] | 112 | int (*symlink)(FsContext *, const char *, V9fsPath *, |
| 113 | const char *, FsCred *); |
| 114 | int (*link)(FsContext *, V9fsPath *, V9fsPath *, const char *); |
Anthony Liguori | 131dcb2 | 2010-04-29 17:44:47 +0530 | [diff] [blame] | 115 | int (*setuid)(FsContext *, uid_t); |
Aneesh Kumar K.V | cc720dd | 2011-10-25 12:10:40 +0530 | [diff] [blame] | 116 | int (*close)(FsContext *, V9fsFidOpenState *); |
| 117 | int (*closedir)(FsContext *, V9fsFidOpenState *); |
| 118 | int (*opendir)(FsContext *, V9fsPath *, V9fsFidOpenState *); |
| 119 | int (*open)(FsContext *, V9fsPath *, int, V9fsFidOpenState *); |
| 120 | int (*open2)(FsContext *, V9fsPath *, const char *, |
| 121 | int, FsCred *, V9fsFidOpenState *); |
| 122 | void (*rewinddir)(FsContext *, V9fsFidOpenState *); |
| 123 | off_t (*telldir)(FsContext *, V9fsFidOpenState *); |
| 124 | int (*readdir_r)(FsContext *, V9fsFidOpenState *, |
| 125 | struct dirent *, struct dirent **); |
| 126 | void (*seekdir)(FsContext *, V9fsFidOpenState *, off_t); |
| 127 | ssize_t (*preadv)(FsContext *, V9fsFidOpenState *, |
| 128 | const struct iovec *, int, off_t); |
| 129 | ssize_t (*pwritev)(FsContext *, V9fsFidOpenState *, |
| 130 | const struct iovec *, int, off_t); |
Aneesh Kumar K.V | 2289be1 | 2011-09-09 15:14:18 +0530 | [diff] [blame] | 131 | int (*mkdir)(FsContext *, V9fsPath *, const char *, FsCred *); |
Aneesh Kumar K.V | 8b88827 | 2011-12-04 22:35:28 +0530 | [diff] [blame] | 132 | int (*fstat)(FsContext *, int, V9fsFidOpenState *, struct stat *); |
Anthony Liguori | 8cf89e0 | 2010-04-29 17:45:00 +0530 | [diff] [blame] | 133 | int (*rename)(FsContext *, const char *, const char *); |
Aneesh Kumar K.V | 2289be1 | 2011-09-09 15:14:18 +0530 | [diff] [blame] | 134 | int (*truncate)(FsContext *, V9fsPath *, off_t); |
Aneesh Kumar K.V | 8b88827 | 2011-12-04 22:35:28 +0530 | [diff] [blame] | 135 | int (*fsync)(FsContext *, int, V9fsFidOpenState *, int); |
Aneesh Kumar K.V | 2289be1 | 2011-09-09 15:14:18 +0530 | [diff] [blame] | 136 | int (*statfs)(FsContext *s, V9fsPath *path, struct statfs *stbuf); |
| 137 | ssize_t (*lgetxattr)(FsContext *, V9fsPath *, |
Aneesh Kumar K.V | fa32ef8 | 2010-09-02 11:09:06 +0530 | [diff] [blame] | 138 | const char *, void *, size_t); |
Aneesh Kumar K.V | 2289be1 | 2011-09-09 15:14:18 +0530 | [diff] [blame] | 139 | ssize_t (*llistxattr)(FsContext *, V9fsPath *, void *, size_t); |
| 140 | int (*lsetxattr)(FsContext *, V9fsPath *, |
Aneesh Kumar K.V | 10b468b | 2010-09-02 11:09:07 +0530 | [diff] [blame] | 141 | const char *, void *, size_t, int); |
Aneesh Kumar K.V | 2289be1 | 2011-09-09 15:14:18 +0530 | [diff] [blame] | 142 | int (*lremovexattr)(FsContext *, V9fsPath *, const char *); |
| 143 | int (*name_to_path)(FsContext *, V9fsPath *, const char *, V9fsPath *); |
| 144 | int (*renameat)(FsContext *ctx, V9fsPath *olddir, const char *old_name, |
| 145 | V9fsPath *newdir, const char *new_name); |
| 146 | int (*unlinkat)(FsContext *ctx, V9fsPath *dir, const char *name, int flags); |
Gautham R Shenoy | 74db920 | 2010-04-29 17:44:43 +0530 | [diff] [blame] | 147 | void *opaque; |
Aneesh Kumar K.V | 99519f0 | 2011-12-14 13:48:59 +0530 | [diff] [blame] | 148 | }; |
Aneesh Kumar K.V | fc22118 | 2010-10-18 15:28:16 +0530 | [diff] [blame] | 149 | |
Gautham R Shenoy | 74db920 | 2010-04-29 17:44:43 +0530 | [diff] [blame] | 150 | #endif |